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作者用墨西哥利什曼的墨西哥亚种、亚马逊亚种及巴西利什曼的巴西亚种、圭亚那亚种分别接种从野外捕回而皮内反应呈阴性的仔猴,自愈后再用同株或异株原虫作攻击感染,研究各个虫株间的交叉免疫。结果发现各株利什曼原虫引起的病变痊愈后均对同株原虫的攻击感染具有免疫力。在用异株原虫作攻击感染时,巴西利什曼巴西亚种的感染痊愈后,产生了对墨西哥利什曼亚马逊亚
The authors used the Mexican subspecies of Leishman of Mexico, the Amazonian subspecies and the Brazilian subspecies of Leishmania of Brazil to inoculate the Mongolian monkeys recovered from the wild while the intradermal reaction was negative respectively. After self-healing, Or heterologous protozoal attack infection, study of cross-immunity between various strains. The results showed that all strains of Leishmania-induced lesions were cured after the same strain of protozoa immune immunity. In the case of heterologous protozoal attack infection, Brazilian Leishmaniasis infection recovered, resulting in Leishman Amazon, Mexico